package cn.zl.crawler;

import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

import java.io.IOException;

/**
 * @author zhanglang
 * @Date 2020/3/15
 */
public class HttpConfigTest {
    public static void main(String[] args) {
        //1.创建HttpClient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();

        //2.创建HttpGet对象，设置url访问地址
        HttpGet httpGet = new HttpGet("http://www.itcast.cn");

        //配置请求信息
        RequestConfig config=RequestConfig.custom().setConnectTimeout(1000)//创建连接得最长时间，单位是毫秒
                       .setConnectionRequestTimeout(500)//设置获取连接得最长时间，单位是毫秒
                       .setSocketTimeout(10*1000)//设置数据传输得最长时间，单位是毫秒
                       .build();

        //给请求设置请求信息
        httpGet.setConfig(config);

        CloseableHttpResponse response=null;
        try {
            //3.使用HttpClient发起请求，获取response
            response = httpClient.execute(httpGet);
            //4.解析响应
            if (response.getStatusLine().getStatusCode() == 200) {
                String content = EntityUtils.toString(response.getEntity(), "utf8");
                System.out.println(content.length());
            }
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            //5.关闭response
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        try {
            httpClient.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}
